Cognizant AWS Cloud and DevOps Engineer Interview Questions, Process, and Tips

Rolling updates and rollbacks in Kubernetes can be performed using deployment objects and their configurations.

• Use Kubernetes deployment objects to manage application updates.

• Specify the desired number of replicas and update strategy in the deployment configuration.

• To perform a rolling update, change the image version in the deployment configuration and apply the changes.

• Kubernetes will gradually update pods to the new...read more

Helm is a package manager for Kubernetes that simplifies application deployment and management.

• Helm allows users to define, install, and upgrade complex Kubernetes applications with ease using charts.

• It helps in managing dependencies, configurations, and versions of applications in Kubernetes.

• Helm enables sharing of applications through public or private repositories, promoting reusability and collaboration.

• It provides...read more

To troubleshoot a Pod not running in a Kubernetes cluster, check logs, describe Pod, check resource limits, verify network connectivity, and restart Pod.

• Check the logs of the Pod to identify any error messages or issues

• Describe the Pod to get more information about its status, events, and configuration

• Check the resource limits and requests of the Pod to ensure it has enough resources to run

• Verify network connectivity w...read more

DaemonSets in Kubernetes ensure that a copy of a pod is running on all or a subset of nodes in a cluster

• DaemonSets are used when you need to run a single pod on all nodes in a cluster, such as logging or monitoring agents

• They are also useful for running pods that provide node-level services, like storage or networking

• DaemonSets can be used to ensure that a specific pod is always running on specific nodes, regardless of

PV and PVC in Kubernetes are used to provide persistent storage for stateful applications.

• Persistent Volume (PV) in Kubernetes is a piece of storage in the cluster that has been provisioned by an administrator.

• Persistent Volume Claim (PVC) is a request for storage by a user or pod in the cluster.

• PVs and PVCs decouple storage from the pod, allowing for easier management and scaling of stateful applications.

• PVs can be dy...read more